Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Sep. 30, 2019	Sep. 29, 2019
Leases [Abstract]
Operating lease, right-of-use assets	$ 904,548	$ 880,564	$ 0
Finance lease, right-of-use assets	2,333		2,976
Total right-of-use assets	906,881
Current operating lease liabilities	179,000	159,821	0
Current finance lease liabilities	818
Long term operating lease liabilities	776,094	$ 770,818	$ 0
Long-term finance lease liabilities	2,116
Total lease liabilities	$ 958,028